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<FONT color="green">001</FONT>    package com.google.code.guava.beans;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import static com.google.common.base.Preconditions.checkArgument;<a name="line.3"></a>
<FONT color="green">004</FONT>    import static com.google.common.base.Preconditions.checkNotNull;<a name="line.4"></a>
<FONT color="green">005</FONT>    <a name="line.5"></a>
<FONT color="green">006</FONT>    import java.beans.BeanInfo;<a name="line.6"></a>
<FONT color="green">007</FONT>    import java.beans.PropertyDescriptor;<a name="line.7"></a>
<FONT color="green">008</FONT>    <a name="line.8"></a>
<FONT color="green">009</FONT>    import com.google.code.guava.beans.Property.PropertyToName;<a name="line.9"></a>
<FONT color="green">010</FONT>    import com.google.common.collect.ImmutableSortedSet;<a name="line.10"></a>
<FONT color="green">011</FONT>    import com.google.common.collect.Iterables;<a name="line.11"></a>
<FONT color="green">012</FONT>    <a name="line.12"></a>
<FONT color="green">013</FONT>    public final class Properties{<a name="line.13"></a>
<FONT color="green">014</FONT>    <a name="line.14"></a>
<FONT color="green">015</FONT>        private Properties(){}<a name="line.15"></a>
<FONT color="green">016</FONT>    <a name="line.16"></a>
<FONT color="green">017</FONT>        public static &lt;X&gt; Property&lt;X&gt; getPropertyByName(final BeanInfo beanInfo,<a name="line.17"></a>
<FONT color="green">018</FONT>            final String propertyName){<a name="line.18"></a>
<FONT color="green">019</FONT>            return new Property&lt;X&gt;(<a name="line.19"></a>
<FONT color="green">020</FONT>                Introspection.findDescriptor(checkNotNull(beanInfo),//<a name="line.20"></a>
<FONT color="green">021</FONT>                    checkNotNull(propertyName)//<a name="line.21"></a>
<FONT color="green">022</FONT>                ));<a name="line.22"></a>
<FONT color="green">023</FONT>        }<a name="line.23"></a>
<FONT color="green">024</FONT>    <a name="line.24"></a>
<FONT color="green">025</FONT>        public static &lt;X&gt; Property&lt;X&gt; getPropertyByName(final Class&lt;?&gt; clazz,<a name="line.25"></a>
<FONT color="green">026</FONT>            final String propertyName){<a name="line.26"></a>
<FONT color="green">027</FONT>            return new Property&lt;X&gt;(//<a name="line.27"></a>
<FONT color="green">028</FONT>                Introspection.findDescriptor(Introspection.getBeanInfo(//<a name="line.28"></a>
<FONT color="green">029</FONT>                    checkNotNull(clazz)),//<a name="line.29"></a>
<FONT color="green">030</FONT>                    checkNotNull(propertyName)//<a name="line.30"></a>
<FONT color="green">031</FONT>                )<a name="line.31"></a>
<FONT color="green">032</FONT>            );<a name="line.32"></a>
<FONT color="green">033</FONT>        }<a name="line.33"></a>
<FONT color="green">034</FONT>    <a name="line.34"></a>
<FONT color="green">035</FONT>        public static &lt;X&gt; Property&lt;X&gt; getPropertyByName(final Object bean,<a name="line.35"></a>
<FONT color="green">036</FONT>            final String propertyName){<a name="line.36"></a>
<FONT color="green">037</FONT>            return new Property&lt;X&gt;(//<a name="line.37"></a>
<FONT color="green">038</FONT>                Introspection.findDescriptor(//<a name="line.38"></a>
<FONT color="green">039</FONT>                    checkNotNull(bean).getClass(),//<a name="line.39"></a>
<FONT color="green">040</FONT>                    checkNotNull(propertyName)//<a name="line.40"></a>
<FONT color="green">041</FONT>                )//<a name="line.41"></a>
<FONT color="green">042</FONT>            );<a name="line.42"></a>
<FONT color="green">043</FONT>        }<a name="line.43"></a>
<FONT color="green">044</FONT>    <a name="line.44"></a>
<FONT color="green">045</FONT>        public static ImmutableSortedSet&lt;String&gt; getPropertyNames(final Object bean){<a name="line.45"></a>
<FONT color="green">046</FONT>            return ImmutableSortedSet.copyOf(Iterables.transform(//<a name="line.46"></a>
<FONT color="green">047</FONT>                Introspection.listPropertyDescriptors(bean),<a name="line.47"></a>
<FONT color="green">048</FONT>                PropertyToName.INSTANCE)//<a name="line.48"></a>
<FONT color="green">049</FONT>            );<a name="line.49"></a>
<FONT color="green">050</FONT>        }<a name="line.50"></a>
<FONT color="green">051</FONT>    <a name="line.51"></a>
<FONT color="green">052</FONT>        public static &lt;X&gt; Property&lt;X&gt; getPropertyfromDescriptor(<a name="line.52"></a>
<FONT color="green">053</FONT>            final PropertyDescriptor descriptor){<a name="line.53"></a>
<FONT color="green">054</FONT>            return new Property&lt;X&gt;(descriptor);<a name="line.54"></a>
<FONT color="green">055</FONT>        }<a name="line.55"></a>
<FONT color="green">056</FONT>    <a name="line.56"></a>
<FONT color="green">057</FONT>        /**<a name="line.57"></a>
<FONT color="green">058</FONT>         * Factory method: get a named Property of the specified type from a Bean<a name="line.58"></a>
<FONT color="green">059</FONT>         * object.<a name="line.59"></a>
<FONT color="green">060</FONT>         * <a name="line.60"></a>
<FONT color="green">061</FONT>         * @param &lt;T&gt;<a name="line.61"></a>
<FONT color="green">062</FONT>         * @param name<a name="line.62"></a>
<FONT color="green">063</FONT>         *            the property name<a name="line.63"></a>
<FONT color="green">064</FONT>         * @param type<a name="line.64"></a>
<FONT color="green">065</FONT>         *            the property type<a name="line.65"></a>
<FONT color="green">066</FONT>         * @param bean<a name="line.66"></a>
<FONT color="green">067</FONT>         *            the bean object<a name="line.67"></a>
<FONT color="green">068</FONT>         * @return the property<a name="line.68"></a>
<FONT color="green">069</FONT>         * @exception IllegalArgumentException<a name="line.69"></a>
<FONT color="green">070</FONT>         *                If the specified type doesn't match the Property's type.<a name="line.70"></a>
<FONT color="green">071</FONT>         * @exception NullPointerException<a name="line.71"></a>
<FONT color="green">072</FONT>         *                if any of the parameters is null<a name="line.72"></a>
<FONT color="green">073</FONT>         */<a name="line.73"></a>
<FONT color="green">074</FONT>        public static &lt;T&gt; BeanProperty&lt;T&gt; getBeanPropertyByNameAndType(final String name,<a name="line.74"></a>
<FONT color="green">075</FONT>            final Class&lt;T&gt; type, final Object bean){<a name="line.75"></a>
<FONT color="green">076</FONT>            final Property&lt;T&gt; property =<a name="line.76"></a>
<FONT color="green">077</FONT>                getPropertyByName(Introspection.getBeanInfo(checkNotNull(bean)),<a name="line.77"></a>
<FONT color="green">078</FONT>                    checkNotNull(name));<a name="line.78"></a>
<FONT color="green">079</FONT>            checkArgument(checkNotNull(type).isAssignableFrom(property.getType()),<a name="line.79"></a>
<FONT color="green">080</FONT>                "Bad type: %s for property: %s, required type: %s",<a name="line.80"></a>
<FONT color="green">081</FONT>                type,<a name="line.81"></a>
<FONT color="green">082</FONT>                name,<a name="line.82"></a>
<FONT color="green">083</FONT>                property.getType());<a name="line.83"></a>
<FONT color="green">084</FONT>            return new BeanProperty&lt;T&gt;(bean, property);<a name="line.84"></a>
<FONT color="green">085</FONT>        }<a name="line.85"></a>
<FONT color="green">086</FONT>    <a name="line.86"></a>
<FONT color="green">087</FONT>        /**<a name="line.87"></a>
<FONT color="green">088</FONT>         * Factory method: get a named Property from a Bean object. With this<a name="line.88"></a>
<FONT color="green">089</FONT>         * method, there is no way to verify the property type. Use<a name="line.89"></a>
<FONT color="green">090</FONT>         * {@link #getBeanPropertyByNameAndType(String, Class, Object)} if you need<a name="line.90"></a>
<FONT color="green">091</FONT>         * type safety.<a name="line.91"></a>
<FONT color="green">092</FONT>         * <a name="line.92"></a>
<FONT color="green">093</FONT>         * @param &lt;T&gt;<a name="line.93"></a>
<FONT color="green">094</FONT>         *            the generic type<a name="line.94"></a>
<FONT color="green">095</FONT>         * @param name<a name="line.95"></a>
<FONT color="green">096</FONT>         *            the property name<a name="line.96"></a>
<FONT color="green">097</FONT>         * @param bean<a name="line.97"></a>
<FONT color="green">098</FONT>         *            the bean object<a name="line.98"></a>
<FONT color="green">099</FONT>         * @return the property<a name="line.99"></a>
<FONT color="green">100</FONT>         * @exception NullPointerException<a name="line.100"></a>
<FONT color="green">101</FONT>         *                if any of the parameters is null<a name="line.101"></a>
<FONT color="green">102</FONT>         */<a name="line.102"></a>
<FONT color="green">103</FONT>        public static &lt;T&gt; BeanProperty&lt;T&gt; getBeanPropertyByName(final String name,<a name="line.103"></a>
<FONT color="green">104</FONT>            final Object bean){<a name="line.104"></a>
<FONT color="green">105</FONT>            final Property&lt;T&gt; property = getPropertyByName(bean, name);<a name="line.105"></a>
<FONT color="green">106</FONT>            return new BeanProperty&lt;T&gt;(bean, property);<a name="line.106"></a>
<FONT color="green">107</FONT>        }<a name="line.107"></a>
<FONT color="green">108</FONT>    <a name="line.108"></a>
<FONT color="green">109</FONT>    }<a name="line.109"></a>




























































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